Tweak shared-core content to exclude src

packages/shared-core/.npmignore

@@ -1,3 +1,5 @@
-node_modules/
-tsconfig.build.json
-tsconfig.json
+*
+!dist/*
+dist/tsconfig.build.tsbuildinfo
+!package.json
+!LICENCE

packages/shared-core/package.json

@@ -2,14 +2,8 @@
   "name": "@budibase/shared-core",
   "version": "0.0.0",
   "description": "Shared data utils",
-  "main": "src/index.ts",
-  "types": "src/index.ts",
-  "exports": {
-    ".": {
-      "import": "./dist/index.js",
-      "require": "./src/index.ts"
-    }
-  },
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
   "author": "Budibase",
   "license": "GPL-3.0",
   "scripts": {